> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# set

> Set script variables to the specified values.

Set script variables to the specified values. Variables set using `set` can be removed
using [`unset`](/docs/swml/reference/calling/unset).

**`set`** `object` — required

An object that accepts user-defined key-value pairs.

---

## **Variables**

Any variable can be set by this method.

## **Examples**

### Setting variables

#### YAML

```yaml
version: 1.0.0
sections:
  main:
    - set:
        num_var: 1
    - play:
        url: 'say: ${num_var}'
    - set:
        num_var: 2
    - play:
        url: 'say: ${num_var}'
```

#### JSON

```json
{
  "version": "1.0.0",
  "sections": {
    "main": [
      {
        "set": {
          "num_var": 1
        }
      },
      {
        "play": {
          "url": "say: ${num_var}"
        }
      },
      {
        "set": {
          "num_var": 2
        }
      },
      {
        "play": {
          "url": "say: ${num_var}"
        }
      }
    ]
  }
}
```

### Setting multiple variables

#### YAML

```yaml
version: 1.0.0
sections:
  main:
    - set:
        items:
          - drill bit
          - drill
        person: handyman
        systems:
          ventilation:
            - inlet
            - outlet
            - fans
          hr:
            - lucy
            - liam
            - luke
    - play:
        url: 'say: The items ${items} will be used by ${person} to fix ${systems.ventilation}.'
```

#### JSON

```json
{
  "version": "1.0.0",
  "sections": {
    "main": [
      {
        "set": {
          "items": [
            "drill bit",
            "drill"
          ],
          "person": "handyman",
          "systems": {
            "ventilation": [
              "inlet",
              "outlet",
              "fans"
            ],
            "hr": [
              "lucy",
              "liam",
              "luke"
            ]
          }
        }
      },
      {
        "play": {
          "url": "say: The items ${items} will be used by ${person} to fix ${systems.ventilation}."
        }
      }
    ]
  }
}
```

## **See Also**

* **[Variables and Expressions](/docs/swml/reference/variables)**: Complete reference for SWML variables, scopes, and syntax
* **[unset](/docs/swml/reference/calling/unset)**: Remove variables from the script

> Set script variables to the specified values.